Last jack



March 12, 1940. w, BAXTER 2,193,187

LAST JACK Filed April 7, 1939 lPatented Mar. 12, 1940 PATENT OFFICE A TLAST'JACK y William L. Baxter, Marblehead, Mass.',assignor4 to UnitedShoe `Machinery Corporation, `Bor- `ough of Flemington, N. J., acorporationmof 'New VJersey l `Application April 7, 1939, "serial No.266,521 f '7 o1eims.- `l(o1. 1ra-15.1)

The present invention relates-,to last jacks and is illustratedherein'as embodied in ajack adapted` for use in disassembling a lasthaving separable fore and heel parts without disturbance `of theforepart of a shoe made on the last.

In one"type of suchlasts, as exemplified by that disclosed in LettersPatent No.` 2,054,935, l

granted on September22, 1936, "in the name of nected bya locking boltand a sliding joint so constructed that when the bolt is moved into its`inoperative position the last parts may be moved with respect to eachother in such a direction that the forepart and heel part may be moved`fr`eely away from each other preparatory to the removal of the forepartof the last from the shoe.

The above-mentioned Hadaway patent also discloses a jackadapted for usein disassembling a last of the above type, the jack being provided withtwo separately operated instrumentalities one of which moves the lockingbolt into its inoperative position and the other of which presses uponthe forepart toslide it with respect to the heel part. It is apparentthat the movementof operation, of theiorepart pressing means; `and thatan operators production is impaired by' any time lag between the arrivalof the locking bolt in itsgoperative position and thebegnning of theapplication of pressure against the forepart.

Accordingly, itis a principal object oi this inventlon toyprovide animproved jack of the above and which will insureth'e optimum sequencethe operationioi the locking bolt and the applif cation of pressureagainst the iorepart.

yTo this end, the invention provides manually operated meansforfoperating the locking bolt` 404 and pressingfupon theforepart of alast of the above typegin timed relation and in the order namedwherebythejforepart of thellast and the shoe thereon are moved relatively tothe heel `part after the last parts have been unlocked.` `les `hereinillustrated` the above-mentioned partpressing `means to be delayedduring suoliA movement of the bolt as is necessary to unlock the lestpensent immediately thereafter eetuates the pressing means toslidethe'forepart on the heel part.

" Another feature of the invention residesfin `the provisionA of meansfor `holding the last onfthe J. B. Hadaway, thefore and heel partsarecon-` theilooking bolt will be :frictionally impeded or` may possibly`be prevented by the premature` type which Vcan be easily and quicklyoperated jaclvagainst the pressure of the forepart pressing'V meanswhich tends to-lpush the last off the jack.

These and other features of the invention comprising certaincombinations and arrangements of parts will `be apparent from thefollowing description of a preferred embodiment `of the inn ventionshownin the drawing, in` which:

Fig. 1 is a' viewin side elevation of a jack f embodying the invention,the heel part of a last on the jack, and a lasted shoe being shown insection; f f

Fig. 2 is an end elevation of the joint between` the fore andheel partsof thelast of Fig. 1 looking toward the ,forepart perpendicular to thejoint surfaces; y Fig. 3 is a View in side elevation, partly in section,`illustrating the jack and last after thefore part has been slid uponthe heel part, and

Fig. 4is a front elevation of the `jack as viewed in the'direction of`the arrow of Fig. 1.

`The last, which, will be described herein only tothe extent rWhich isnecessary for an under l standing of the use of the illustrated jack,and

which' is similar, to that disclosed inthe abovementioned Hadawaypatent, comprises a forepart IU andheel part l2 having plane jointsurfaces I4 on which the fore and heel parts are arranged tojslide atsuch an angle that the heel parts of the vlast and of valasted shoethereon may be vfreely separated as will `be clearly `understood fromacomparison of Figs. 1 and 3` The heel part l2 of the last comprisesauheel plate it, a thimble l1, and a bonding plate i3, all of which areeffectuallyintegral With each other, the latter having aheightwiseextending slottZ formed therein. Studs` 22 ,carried by a block23 firmly embedded inthe forepart l and Whichrclosely t between thesdesoi the slot 20 are provided with heads 24` arranged to overlieportions of the bonding plate I8 `contiguous to itsslot so -as to holdthe joint surfaces I4 of the last parts in contact` With each other. Topermit the last parts to be readily separated from each other. uponbeing movedinto the relationinwhich they are illustrated in Fig. 3, theslot 2l] is provided with two circularenlargements 26, 21 of suflicientsize and so spaced-'as to admit freely the heads 24 ofthe studs 22.` u

In order to prevent any sliding action between the `last parts `whenthey are'in their assembled relation, a locking bolt 28 slidably mountedin the block `23 is arranged normally to project `beyond the jointsurface I4 of the iorepart into the enlargement 21 in the bonding plateI8. The

`leen:- 28 is urged outwardly of nee bleek 2s by e jack having means forholding the heel part, means for moving the locking bolt to, and holdingit in, inoperative position, means for pressing upon the forepart in thevicinity of the joint to displace the forepart relatively to the `heelpart, and manuallyoperated means for operating the two last-named meansin the order named to unlock the last and to displace the forepartthereof and a shoe thereon relatively to the heel part while holding thelocking bolt in inoperative position. l

5. A last pulling `iack for removing from a shoe a last having a heelpart and forepart which are separable and a sliding joint between thelast arranged to move said bolt into inoperative position, and means foroperating said member and plunger in succession, thereby to move theforepart relatively to the heel part after the locking bolt has beenmoved into its inoperative po-` sition.

6. A last pulling jack for removing from a shoe a last having a`removable heel part, a iorepart with a sliding joint between them and alocking bolt to prevent such sliding action, said jack havi ing meansfor holding the heel part, a` lever pivoted on the jack frame and havingone end arranged, when the lever is swung; to contact with the lockingbolt and move it to inoperative position, a manually operated memberconnected to the lever to swing the lever as stated, a pushing memberarranged `to press upon the forepart` 5 to slide it upon the heel partwhen unlocked, and a lost motion connection between the manually`operated member and the pushing member whereby the forepart is so slidupon the heel part after the lever has moved the locking bolt l0 toinoperative position.

7. A last pulling jack for removing from a shoe a last having aremovable heel part, a forepart `with a sliding joint between them and alocking bolt to prevent such sliding action, said jack hav- 15 ing meansfor holding the heel part, a lever pivoted on the jack frame and havingone end arranged, when the lever is swung, to contact with the lockingbolt and move it to inoperative position, a manually operated swingingmember linked to the lever to operate the lever and having a slot, apushing member arranged to slide in the jack frame and to push upon theforepart when so slid thereby to move the forepart relatively to theheel part, and a link extending 25 between the pushing member and theslot, whereby the manually operated swinging member will pick up thepushing member after it has operated the lever to render the lockingbolt inoperative and to displace the forepart and a shoe thereon `3relatively to the heel part.

WILLIAM L. BAXTER.

